| 摘要 |
PURPOSE:To simplify and miniaturize an apparatus by arranging a cylinder fixing a piston in a supplying pipes for casting sand and air, and supporting plural eject pins to this cylinder body. CONSTITUTION:A base plate 27 is arranged to a lifting rod 25 constituting an eject device, and the pipe 28 communicating to a supplying cylinder of a blow tank 3 is arranged to the plate 27. In the pipe 28, the sand supplying pipe and the air passage at outer circumferential part thereof are formed. Further, an eject plate 21, which inserts the cylinder body 30 using the pipe 28 as a piston rod and provides the eject pin at outer circumference is supported. By working the cylinder 30, the plate 21 is driven to each position of blow, intermediate and eject, and as the pipe 28, which molding and mold parting are executed, comes to a guide rod for plate 21, the whole apparatus is simplified and miniaturized.
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